Paperboard containers



Sept- 4, 1956 c. D. wELsHENBAcH 2,761,608

PAPERBOARD CONTAINERS 2 Sheets-Sheet 1 Filed March 5, 1952 INVENTOR. Charles D. We ls henback *202 ATTORNEYS Sept. 4, 1956 C. D. WELSHENBACH PAPERBOARD CONTAINERS Filed March 3, 1952 2 Sheets-Sheet 2 INVENTOR C'harles l). Welshenbach -f 7%6 7 ATTORNEYS United States Patent O PAPERBOARD CONTAINERS Charles D. Welshenbach, Sandusky, Ohio, assignor t'o The Hinde & Danch Paper Company, Sandusky, Ohio, a corporation of Ohio Application March 3, 1952, Serial No. 274,577

2 Claims. (Cl. 229-16) This invention relates to paperboard containers and more particularly to a vertically elongated container that has strength and rigidity enough to make it suitable for shipping loose, heavy articles such as nails,` bolts, nuts, screws or the like.

The container of the present invention is composed ofl an inner box that provides an open top receptacle into which the loose material may be fed from a weighing machine or the like, and a cover box ofsimilar construction that telescopically fits over the inner box and that is assembled on the inner box after it is filled to provide a cover and to strengthen the side walls of the container. i,

The inner box and cover box are of identical construction except that the cover box is made slightly larger than the inner box so that its internall dimensions correspond to the external dimensions of the inner box to permit it to telescopically receive the inner box.

The inner box and cover box are formed from substantially rectangular blanks and each has an end-wall strong,- ly united to the upright side walls,v two parallel side walls being single ply walls and the other two side walls being double ply walls.

The inner box and cover box are so shaped that they can be interiitteld only when the double ply walls of the cover box are contiguous to the single ply walls of the inner box and the singly ply walls of the cover box are contiguous to the double ply walls of the innerA box.

The bottom wall of the inner box and the:v top wall of the cover box are each composed of three thicknesses of paperboard and when the cover box is assembled with the inner box each of the four side walls is also composed of three thicknesses of paperboard.

The invention has for its object to provide a `shipping container for nails, bolts, nuts, screws or the like which is economical to manufacture, which can be quickly and easily assembled and which possesses great strength.

Reference should be had to the accompanying drawings forming a part of this speciiication, in which:

Figure l is a perspective view o-f a container embodying the invention;

Fig. 2 is a perspective view showing the inner box and cover box separated;

Fig. 3 is a section in the plane indicated at 3-3 in Fig 1; l,

Fig. 4 is a fragmentary vertical section in the plane indicated at 4-4 in Fig. 3;

Fig. 5 is a horizontal section through the container in plane indicated at 5 5 in Fig, l;

Fig. 6 is a horizontal section through the inner box taken in the plane indicated at 6 6 in Fig. 2; and

Fig. 7 is a plan view of the paperboard blank from which one of the boxes may be made.

Referring to the accompanying rdrawings, the container of the present invention comprises an inner box A and a cover box B, the two boxes being of identical construction except for the slight differences in dimensions neces` sary to permit the cover box to fit closely over the inner Patented Sept. 4, 1956 responding parts of the inner box, with the addition of the reference character m The paperboard box of the present invention is vertically elongated and has parallel upright single ply Walls 1 and 2. The other two walls of the box are double ply walls having outer plies 3 and 4 that are integral with the side wall 1 and inner plies 5 and 6 which are integral with the side wall 2.

The bottom of the box is composed of three thicknesses of paperboard having a bottom ply 7 that is integral with the side Walls 1 and 2. The intermediate ply of the bottom is formed by [laps 8 and 9 which are integral with the outer plies 3 and 4 of the two ply side walls. The top ply of the bottom is formed by aps 10 and 11 that are integral with the inner plies 5 and 6 of the two ply side walls. The flaps 8 and 9 are of unequal length, the flap 9 being longer than the flap 8. The flaps 10 and 11 are also of unequal length, the flap 10 being longer than the flap 11. By forming these flaps of unequal length the end edges of the flaps forming the intermediate and top layers of the bottom wall adjoin along lines 12 and 13 which are offset from each other and from the center of the box so as to increase the rigidity of the bottom.

The overlapping plies of the box may be secured together in anysuitable Way. As herein shown the plies 3 and 5 and 4 and 6 of the two ply side walls are secured together by means of staples 14.

The inner box A provides a receptacle which may be filled with loose articles such as nails, bolts or the like, after which the cover box B may be placed over the inner box A and secured thereto by suitable means such as bands 15. The inner box A is so constructed that the distance between the outer faces of the single ply i walls 1 and 2 is different from the distance between the outer faces of the `double ply walls, and the box B is constructed so that the distance between the inner faces of its double ply walls corresponds to the distance between the outer faces of the single ply walls of the inner box A, and the distance between the inner faces of the single ply walls la and 2a corresponds to the difference between the outer faces of the double ply walls of the inner box, so that the two boxes will iit together only when theldouble ply walls of the cover box are in contiguity with the single ply walls of the inner box and the single ply walls of the outer box in contiguity with the double ply Walls of the inner box, so that when the two boxes are telescoped together all of the walls of the container are of triple thickness throughout. If desired, the cover box may be formed exteriorly square and the inner box interiorly square.

A blank from which the box may be made is shown in Fig. 7 of the drawings. This blank is formed from a rectangular piece of paperboard, preferably corrugated paperboard. The portion of the blank which forms the bottom layer 7 of the box bottom is at the center of the blank and score lines 16 and 17 are formed between the bottom portion 7 and the side wall portions 1 and 2, the walls 1 and 2 and bottom 7 forming a strip extending the full length of the blank centrally thereof.

and 19 and the fiaps 8 and 9 being separated from the portion 7 by narrow slots 20 and 21.

The portions of the blank which form the outer plies 3 and 4 of the two ply side walls are joined to the opposite sides of the side wall 1 by score lines 22 and 23 which are spaced apart a distance slightly greater than the width of the bottom portion 7, so that the wall 1 is slightly wider than the bottom portion 7.

The flaps 8 and 9 are joined to the portions 3 and 4 of the blanks by score lines 24 and 25 which are offset outwardly a distance corresponding to the thickness of the paperboard so that the flaps 8 and 9 can be readily swung into position overlying the bottom portion 7.

The portions of the blank forming the inner plies and 6 of the two ply side walls are joined to the portion forming the side wall 2 by score lines 26 and 2'7 which are spaced apart a distance slightly |less than the width of the bottom portion 7 so that the portions 5 and 6 can be readily inserted between the portions 3 and 4. The flaps and 11 are joined to the portions 5 and 6 by score lines 28 and 29 which are offset outwardly with respect to the score line 17 a distance corresponding to twice the thickness of the paperboard, so that the flaps 10 and 11 can be readily swung into place over the flaps 8 and 9.

In assembling the box the sections 3 and 4 are rst folded about the score lines 22 and 23, the aps 8 and 9 are folded to a position at right angles to the portions 3 and 4 and the portion 1 is folded on the score line 16 to a position at right angles to the bottom 7 with the liaps 8 and 9 resting upon the bottom 7.

For the convenience of the operator, the sections 3 and 4 which should be folded first, may be provided with suitable markings such as notches 30.

After the portions 1, 3, 4, 8 and 9 of the blank are placed in proper position with respect to the bottom portion 7, the portions 2, 5, 6, 10 and 11 are folded in a like manner and swung about the fold line 17 to bring the portions 5 and 6 within the portions 3 and 4 and the flaps 10 and 11 on top of the flaps 8 and 9 as shown in Fig. 3, whereupon the plies of the two ply side walls may be secured together by means such as the staples 14.

It is to be understood that in accordance with the provisions of the patent statutes, variations and modifications of the specific devices herein shown and described may be made without departing from the spirit of the invention.

What I claim is:

1. A container unit of rectangular form having a three ply bottom wall, two parallel single ply side walls and two parallel double ply side walls, said two single ply side walls being integral with the bottom ply of said bottom walll, the outer plies of said double ply side walls being integral with one of the single ply side walls and the inner plies of said double ply side walls being integral with the other of the single ply side walls, the said outer plies of said double ply walls having integral substantially rectangular fiaps extending inwardly from their lower edges, resting on said bottom ply of said bottom wall and together extending substantially entirely across saidbottorn ply of said bottom Wall and forming the intermediate ply of said bottom wall, the said inner plies of said double ply walls having integral substantially rectangular liaps extending inwardly from their lower edges and together extending substantially entirely across said bottom ply of said bottom wall and forming the top ply of said bottom wall, the flaps integral with the outer plies of the double ply side walls comprising first and second flaps of relatively unequal length with the first flap being the shorter of the two, the flaps integral with the inner plies of the double ply side walls comprising third and fourth flaps of relatively unequal length with the third flap being the longer of the two, said container unit having a cross section substantially in the shape of a square with sides of a given length, the sum of the lengths of said first and second flaps being substantially equal to said given length, the sum of the lengths of said third and fourth flaps being substantially equal to said given length, the sum of the lengths of said first and third fiaps being substantially equal to said given length, the sum of the lengths of said second and fourth flaps being substantiailly equal to said given length, whereby the junctures between said first and second flaps on the one hand and said third and fourth flaps on the other hand are laterally offset from each other.

2. A container unit of rectangular form having a three ply bottom wall, two parallel single ply side walls and two parallel double ply side walls, said two single ply side walls being integral with a first ply of said bottom wall, the outer plies of said double ply side walls being integral with one of the single ply side walls and the inner plies of said double ply side walls being integral with the other of the single ply side walls, the said outer plies of said double ply walls having integral substantially rectangular flaps extending inwardly from their lower edges and together extending substantially entirely across said bottom wall to form a second ply of said bottom wall, the Said inner plies of said Idouble ply walls having integral substantially rectangular flaps extending inwardly from their lower edges and together extending substantially entirely across said bottom wall to form a third ply of said bottom wall, the flaps integral with the outer plies of the `double ply side walls comprising first and second flaps of relatively unequal length with the first iiap being the shorter of the two, the flaps integral with the inner plies of the double ply side walls comprising third and fourth aps of relatively unequal length with the third ap being the longer of the two, said container unit having a cross section substantially in the shape of a square with sides of a given length, the sum of the lengths of said first and second aps being substantially equal to said given length, the sum of the lengths of said third and fourth flaps being substantially equal to said given length, the sum of the lengths of said rst and third flaps being substantially equal to said given length, the sum of the lengths of said second and fourth flaps being substantially equal to said given length, whereby the junctures between said first and second aps on the one hand and said third and fourth flaps on the other hand are laterally offset from each other.

References Cited in the file of this patent UNITED STATES PATENTS 340,079 Appel Apr. 20, 1886 1,755,690 Heim Apr. 22, 1930 1,946,795 Jonas Feb. 13, 1934 2,125,813 Roscoe Aug. 2, 1938 2,349,605 Becker May 23, 1944 2,417,104 Cope Mar. 11, 1947 2,447,677 v Williams Aug. 24, 1948 2,524,441 Guyer Oct. 3, 1950 2,603,404 Eldredge July 15, 1952 2,611,526 George Sept. 23, 1952 

